What kit - companies are brand specific as to what they can get. Hence Nike cancelled the exclusive contract with A&H so no other in on the game (and Jeff losing money hand over fist as he gets under cut and his atrotious mark ups found out!)
If you're after a cheap and cheerful, then generic Refs Kit seach will find cheepos, if after a nice Nike then there are some Dutch sites and a german that have good deals.
But would suggest Sporting touch as they are subsidised to create an income to the RA - and supporting a worth cause. Bit like buying stuff from you dad's shop.